Let's divide 31509020 by 391
We're looking to find how many times 391 goes into 31509020.

Let's proceed to step 1:
If we divide 3 by 391, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 391

Step 2:
391 goes into 31 0 times with a remainder of 31.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 31 and we're left with 31.
Append the next digit (5) from the dividend to 31 and continue with: 315 / 391

Going ahead to step 3:
If we divide 315 by 391, we get 0 and a remainder of 315.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 315 after subtracting 0 from 315.
Fetch the next digit (0) from the dividend, attach it to 315 and continue: 3150 / 391

Advancing to step 4:
3150 divided by 391 is 8 with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 22 after subtracting 3128 from 3150.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 391

On to step 5:
229 divided by 391 is 0 with a remainder of 229.
Put 0 as the next digit of the answer. 
Result so far: 80.0
Subtracting 0 from 229 leaves us with 229.
Fetch the next digit (0) from the dividend, attach it to 229 and continue: 2290 / 391

Let's proceed to step 6:
When dividing 2290 by 391, we get 5 with a remainder of 335.
The next digit of our result is 5. 
Result so far: 805.0
Subtracting 1955 from 2290 leaves us with 335.
Take the next digit (2) from the dividend and append it to 335, then repeat: 3352 / 391

Going ahead to step 7:
When dividing 3352 by 391, we get 8 with a remainder of 224.
Record the quotient 8 as the next digit in the result. 
Result so far: 8058.0
If we take 3128 away from 3352, we end up with 224.
Take the next digit (0) from the dividend and append it to 224, then repeat: 2240 / 391

On to step 8:
If we divide 2240 by 391, we get 5 and a remainder of 285.
Use 5 as the next digit of our solution. 
Result so far: 80585.0
The remainder is 285 after subtracting 1955 from 2240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Advancing to step 9:
2850 divided by 391 is 7 with a remainder of 113.
Use 7 as the next digit of our solution. 
Result so far: 80585.7
Subtract 2737 from 2850 to get 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Let's proceed to step 10:
391 goes into 1130 2 times with a remainder of 348.
The number 2 becomes the next digit in our result. 
Result so far: 80585.72
If we subtract 782 from 1130, we get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Let's proceed to step 11:
The number 391 fits into 3480 8 times, leaving a remainder of 352.
Use 8 as the next digit of our solution. 
Result so far: 80585.728
If we take 3128 away from 3480, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Step 12:
The number 391 fits into 3520 9 times, leaving a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 80585.7289
If we subtract 3519 from 3520, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 13:
If we divide 10 by 391, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 80585.7289
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 14:
The number 391 fits into 100 0 times, leaving a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 80585.7289
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final outcome is 80585.7289, with a leftover of 1e-05.